If an array has two elements what is the index of the last element in the array?

0
1
2
3

How do I find this for future reference?

Question

If an array has two elements what is the index of the last element in the array?

0
1
2
3

How do I find this for future reference?

unklerhaukus · Answer

Does indexing start with 0 or 1?

anonymous · Answer

uhmm...

anonymous · Answer

0?

unklerhaukus · Answer

if the first element is indexed 0, then the next element will be indexed with ...

anonymous · Answer

1?

unklerhaukus · Answer

So if the array has only two elements, what is the  index of the last element in the array?

anonymous · Answer

2?

unklerhaukus · Answer

how did you get that?

anonymous · Answer

well if 0 is the first indexed element and 1 is the second. then 2 must be the 3rd right?

unklerhaukus · Answer

there are only two elements in the array

anonymous · Answer

oh okay so 1?

unklerhaukus · Answer

yes
$$A =\begin{pmatrix}a_0\a_1 \end{pmatrix}$$

anonymous · Answer

:) thank you. Would you mind helping me with a few more?

unklerhaukus · Answer

ok

unklerhaukus · Answer

NB: some programming languages / syntax : 
 index starting with 0, whereas others start indexing with 1